ICM Controls SC 4211 Installation, Operation & Application Manual Download

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2-Stage Heat Pump

Auto Changeover

Hardwire

SC 4211

Installation, Operation & Application Guide

For more information on our complete range of American-made
products – plus wiring diagrams, troubleshooting tips and more,
visit us at

www.icmcontrols.com

• Configurable
• 2-Stage Heat Pump Systems
• Large Display With Backlight
• Selectable Fahrenheit or Celsius
• SimpleSet™ Field Programming
• Status Indicator Lights
• Relay Outputs

(minimum voltage drop in thermostat)

• Remote Sensor Compatible
• Ideally Suited for:

–

Residential (New Construction/Replacement)

–

Light Commercial

Non-Programmable Electronic Thermostat

Summary of Contents for SC 4211

Page 1: ...oting tips and more visit us at www icmcontrols com Configurable 2 Stage Heat Pump Systems Large Display With Backlight Selectable Fahrenheit or Celsius SimpleSet Field Programming Status Indicator Lights Relay Outputs minimum voltage drop in thermostat Remote Sensor Compatible Ideally Suited for Residential New Construction Replacement Light Commercial Non Programmable Electronic Thermostat ...

Page 2: ...le Compressor heat pump with electric backup 5 Dual Compressor heat pump with electric backup 5 Remote Sensor Installation Optional 6 Terminal Designator Descriptions 7 SC4211 Output Chart 7 Configuration Mode 8 Configuration Mode Settings 9 Mode of Operation 14 Button Functions 15 Operating Modes 16 LED Indicators 17 Testing the Thermostat 18 Lockout Feature 19 SimpleSetTM Field Programming 20 Tr...

Page 3: ... Parts Diagram Configuration switch Reset switch Left system button Right fan button Down button Up button Field programming pins RESET CONFIG FP ...

Page 4: ...VAC 18 30 VAC 1 amp maximum per terminal 3 amp maximum total load Temperature control range 45 F to 90 F 7 C to 32 C Accuracy 1 F 0 5 C System configuration 2 stage heat pump Timing Anti short Cycle 4 minutes bypass anti short cycle delay by returning to OFF mode for 5 seconds Backlight Operation 10 seconds Terminations S1 S2 L R C O B Y1 W2 Y2 G E Emergency heat indicator ...

Page 5: ...is below 50 degrees this can damage your A C system and cause personal injuries Use this thermostat only as described in this manual To Remove Existing Thermostat ELECTRICAL SHOCK HAZARD Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before removing the existing thermostat 1 Turn off power to the heating and cooling sy...

Page 6: ...gh the wire opening in the base of the thermostat 4 Mark the placement of the mounting holes 5 Set thermostat base and cover away from working area 6 Using a 3 16 drill bit drill holes in the places you have marked for mounting 7 Use a hammer to tap supplied anchors in mounting holes 8 Align thermostat base with mounting holes and feed the control wires through slit in thermal intrusion barrier an...

Page 7: ...Reversing Valve Compressor Auxiliary Heat Optional remote or outdoor sensor Service Led Wire Emergency Heat Fan Compressor 2 Transformer 120 VAC 24 VAC Reversing Valve Compressor 1 Auxiliary Heat Optional remote or outdoor sensor Service Led Wire Emergency Heat Fan Wiring Diagrams Note For systems without emergency strip heat a jumper wire should be placed between W2 E ...

Page 8: ...nal on the remote sensor Wire 2 should run between the S2 terminal on the thermostat and the S2 terminal on the remote sensor Connect the shielding of the wire to the S2 terminal on the thermostat 5 Configure the thermostat to operate with the remote indoor sensor see Configuration Mode setting 13 Page 12 or use it for an outdoor sensor Note Remote or outdoor sensor reading can be displayed by sim...

Page 9: ...igurable O cool active reversing valve B heat active reversing valve Y1 1st stage cool 1st stage heat W2 2nd stage heat for single compressor systems 2nd stage for Emergency heat Y2 2nd stage cool for 2 compressor systems 2nd stage heat for 2 compressor systems G Fan E 1st stage heat for Emergency heat mode The SC4211 thermostat is configurable for most heat pump systems The configuration directly...

Page 10: ...mode To exit configuration mode press the CONFIG switch for 1 second Press the up or down button to change settings within each screen Down button Up button Press the right button to advance to the next screen Note Pressing the left button will return you to the previous screen Left button Right button The configuration mode is used to set the SC4211 to match your heat pump system To configure the...

Page 11: ...o set differential value Press the right button to advance to the next screen 3 2nd Stage Temperature Differential 1 F to 5 F 0 5 C to 2 5 C Set the number of degrees between when stage 1 turns on and when stage 2 turns on Press the up or down button to set differential value Press the right button to advance to the next screen 4 Staged Off Outputs Select whether the outputs for heating and coolin...

Page 12: ...o set deadband value Press the right button to advance to the next screen Press the up or down button to select Press the right button to advance to the next screen 6 System Set for reversing valve operation and number of compressors in your system Choose System Reversing Valve Active Number of Compressors or Compressor Stages Heat Pump HP O 1 HP b 1 HP O 2 HP b 2 ...

Page 13: ...e selected in Step 9 and minimum cool set temperature selected in Step 10 Note The mode cannot be changed when the thermostat is locked Press the up or down button to select Press the right button to advance to the next screen 9 Maximum Heat Setpoint 45 F to 90 F 7 C to 32 C Adjust to control the maximum heat set temperature allowed Press the up or down button to select Press the right button to a...

Page 14: ...ch actual room temperature Note When not set to 0 will display Press the up or down button to select Press the right button to advance to the next screen 13 Temperature Sensor 1 3 1 Only on board sensor determines room temperature 2 Only remote sensor determines room temperature 3 Average temperature of on board and remote sensor Note If there is no remote sensor option 1 must be selected Press th...

Page 15: ...an Delay Off Time 0 30 60 90 seconds Select the fan purge time for cooling Press the up or down button to select Press the right button to advance to the next screen Press CONFIG button for 2 seconds to exit configuration ...

Page 16: ...SC4211 will stop outputting when the call for cooling is satisfied The thermostat will not let the compressor come on for 4 minutes after it turns off This protects your compressor The SC4211 has five possible operating modes OFF Heat Emergency Mode Cool and Cool Heat mode In off mode the thermostat will not turn on heating or cooling devices The manual fan can be turned on in all operating modes ...

Page 17: ...ration settings SYS left Used to change from OFF HEAT EMER HEAT COOL and COOL HEAT modes FAN right Used to turn on and off the indoor fan UP SYS and Fan Held in simultaneously for 10 seconds to lock and unlock the thermostat DOWN and SYS Pressed simultaneously to display outdoor temperature if outdoor remote sensor is connected SYStem left FAN right Down button Up button ...

Page 18: ...AN shows on the display and the fan icon appears when the fan operates OFF Heat Mode In this mode the thermostat controls the heating system When the heat outputs the flame icon apprears on the display Note There is a four minute delay for your compressor to restart after it has turned off To bypass the compressor time delay go to OFF mode for 5 seconds Emergency Heat Mode In emergency heat mode t...

Page 19: ...very 10 seconds in the cool and heat mode LED Indicators AUX GREEN CHECK RED EMER RED There are three LED indicators located on the front of the thermostat They are designed to inform you of the following AUX GREEN This turns on when the auxiliary back up heating is in operation This is the second non economy stage of heat CHECK RED When this turns on a malfunction has occurred somewhere in the he...

Page 20: ...ould be thoroughly tested CAUTION Do not energize the air conditioning system when the outdoor temperature is below 50 degrees It can result in equipment damage or personal injury Cool Test 1 Press SYS left button until cool mode is displayed 2 Adjust set temperature so it is 5 degrees below room temperature 3 A C should come on within a few seconds 4 Adjust the set temperature 2 degrees above the...

Page 21: ...ment is limited Select the appropriate lockout from Configuration Mode Settings Step 8 Page 11 of this guide To activate the LOCK feature 1 Simultaneously press the SYS FAN and UP buttons for 10 seconds 2 will display and the lockout function will be enabled To deactivate the LOCK feature repeat steps 1 and 2 above ...

Page 22: ...p and down buttons and CONFIG switch simultaneously for 5 seconds to exit from data transfer mode and to return the master to the OFF mode 7 Turn off power to the master and remove it from the wall 8 Connect the master to the target using the 3 wire connector Attach one end to the Master s FP pins and the other end to the Target s FP pins Note Target thermostat must be powered with 24 VAC for fiel...

Page 23: ...lay Thermostat is in Emergency mode Room temperature is not correct Calibrate thermostat see Configuration Mode Setting 11 Page 12 If remote sensor is used check S1 and S2 terminal connections displays when any button is pressed Thermostat has the button lockout function activated see Lockout Feature Page 19 and Configuration Mode Setting 8 Page 11 on display instead of room temperature Check for ...

Page 24: ...anty the Buyer shall 1 Notify the Seller promptly of any claim submitting date code information or any other pertinent data as requested by the Seller 2 Permit the Seller to inspect and test the product claimed to be defective Items claimed to be defective and are determined by Seller to be non defective are subject to a 30 00 per hour inspection fee This warranty constitutes the Seller s sole lia...

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